/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/DenseMatrix.h
Return C = A x Transpose(B), where B is an Nx6 matrix, and A is a 6x6 mass matrix (Mass in upper left 3x3 diagonals, Inertia in lower right 3x3). C = |M 0| * |B0 B1|(T) = |M.B0(T)| |0 I| |I.B1(T)|
template<int32 T_EB> static [TDenseMatrix](API\Runtime\Chaos\Chaos\TDenseMatrix)< MaxElements > MultiplyABt ( const [FMassMatrix](API\Runtime\Chaos\Chaos\FMassMatrix) & A, const [TDenseMatrix](API\Runtime\Chaos\Chaos\TDenseMatrix)< T_EB > & B )